76 Bulletin 29 240 



Mitra toriuosa Gabb 

 Plate 11, Figure 13 

 Mitra tortuosa Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 220, 1873. 



Shell with about twelve whorls, the first two nuclear; later 

 whorls sculptured by a dozen sharp ribs extending from suture 

 to suture, with concave interspaces marked by spiral incised 

 lines. The shell measures 28 X 10 mm. We have several meta- 

 types for comparison. 



Locality. — (Exp'd '16) Zone E, Rio Gurabo at Los Que- 

 mados. 



Mitra Berlineri, n. sp. 

 Plate 11, Figures 15, 15a 



Shell large, solid, typically mitriform, spire elevated; slightly 

 less in length than the aperture; whorls seven and a half, the 

 first two smooth, the third and all the subsequent volutions 

 sculptured by many sub-equal, sub-equidistant, somewhat wavy 

 and irregular alternating furrows and ridges; and by unequal, 

 irregular, broad, more or less obsolete, longitudinal plications 

 which extend from the suture to the base of the whorls; suture 

 distinct with a rather ill-defined sub-sutural band; aperture large, 

 not contracted anteriorly. Columella encrusted with a thick 

 callus, and bearing four strong plications; canal nearly straight. 

 Length of shell 83, width 24 mm. 



This large Mitra rivals M. titan in size, but is unlike any 

 recent or fossil species from the southeastern coast of America or 

 from the Antilles. 



I take the greatest pleasure in naming this splendid Mitra 

 in honor of Mr. Emile Berliner, of Washington. D. C, as a 

 slight token of appreciation of his generous gift of the Sarah 

 Berliner Foundation, which has made this work possible. 



Locality. — (Exp'd '16) Bluff 1, Cercado de Mao, 



Mitra {Strigatella?) perturbatrix , n. sp. 

 Plate 14, Figures 1, 2 

 Shell slender, somewhat Columbellif orm , spire a trifle shorter 



